Example

For example, when applied to poster & light box applications to be viewed from an average of 5 - 10 feet, the resolution of the image at final size for this application would be 100 ppi (pixels per inch).

The basic formula would be: 4.0 MB per sq. ft. in RGB color space

For a 24” x 36” lightbox (6 sq. ft.) with a final output resolution of 100 ppi, the full size image would be scanned so that the resulting file would at least 24MB.

6 sq. ft. X 4 MB = 24 MB (RGB mode)

Print File Size (RGB)

The following chart shows the acceptable digital file size for an indicated print size at a desired resolution in RGB color mode.

Example:

The required digital file size for an 8” x 10” print at 300 ppi would be 7.2 MB.